نتایج جستجو برای: reproductive functions
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Endosulfan is an organochlorine insecticide and acaracide used to control a broad range of insect and arthropod pests on a wide variety of crops in many agrosystems. It can cause acute and chronic toxicity. Endosulfan is a neurotoxin, haematoxin, genotoxin and nephrotoxin. Toxicity of this insecticide on reproductive organs is confirmed. So this article reviews experimental and epidemiological ...
For many years it was thought that the female reproductive tract was a sterile environment, devoid of immune cells or pathogens. We now know that the immune system represents an important component of reproductive tissues, influencing many of its biological functions. Similarly, bacteria are present within the female reproductive tract as a normal component. Therefore, the female reproductive t...
Chemical defense is assumed to be costly and therefore algae should allocate defense investments in a way to reduce costs and optimize their overall Wtness. Thus, lifetime expectation of particular tissues and their contribution to the Wtness of the alga may aVect defense allocation. Two brown algae common to the SE PaciWc coasts, Lessonia nigrescens Bory and Macrocystis integrifolia Bory, feat...
Reproductive senescence is a hallmark of aging. The molecular mechanisms regulating reproductive senescence and its association with the aging of somatic cells remain poorly understood. From a full genome RNA interference (RNAi) screen, we identified 32 Caenorhabditis elegans gene inactivations that delay reproductive senescence and extend reproductive lifespan. We found that many of these gene...
in this paper, we consider a new class of analytic functions in the unit disk using polynomials of order alpha. we give some sufficient conditions for functions belonging to this class.
Individuality is a complex trait, yet a series of stages each advantageous in itself can be shown to exist allowing evolution to get from unicellular individuals to multicellular individuals. We consider several of the key stages involved in this transition: the initial advantage of group formation, the origin of reproductive altruism within the group, and the further specialization of cell typ...
Women's health, in general, and women's reproductive health, in particular, are currently receiving considerable attention in the political arena as well as from funding agencies. While politicians and advocates tend to refer to "health," scientists are more likely to focus on morbidity or the absence of health; unfortunately, the terms are often used interchangeably. The World Bank has drawn o...
The vertebrate nuclear hormone receptor steroidogenic factor 1 (SF1; NR5A1) controls reproductive development and regulates the transcription of steroid-modifying cytochrome P450 genes. We find that the SF1-related Drosophila nuclear hormone receptor HR39 is also essential for sexual development. In Hr39 mutant females, the sperm-storing spermathecae and glandular parovaria are absent or defect...
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